Answer
$9a^{2}b^{8}$
Work Step by Step
$\frac{a^{-3}b^{6}}{9^{-1}a^{-5}b^{-2}}=$
$\frac{9^{1}a^{-3+5}b^{6+2}}{1}=$
$\frac{9a^{2}b^{8}}{1}=$
$9a^{2}b^{8}$
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